The mind-boggling image of an optical illusion is leaving the internet baffled as viewers desperately struggle to figure it out… so, can YOU guess what it is?

This optical illusion has people on the internet scratching their heads as they struggle to figure out what's going on in the 'crazy' image.

The puzzling photo was first shared by @HetMuffReport on Instagram – where social media users flooded the comments section in a desperate attempt to decipher the 'confusing' snap.

People couldn't get over the staggering amount of time it took their brains to see what was going on in the image, which shows a dog wearing a harness.

So… are your observation skills strong enough to solve the illusion?

The photo, which has racked up more than 6,222 likes so far, was captioned: “Why did it take so long for my brain to figure out what was going on in this photo?”

At first glance, many people on the Internet claimed to have seen a “creepy dog” whose face was turned to the side.

Many people couldn't quite figure out what was going on with the pet; they wondered if he was looking straight or to the side, or if there was something wrong with him.

However, the key to understanding the optical illusion is to look at the image from a different angle.

If you're viewing the image from your phone, turn it upside down to decipher what's going on.

After turning your phone to the right, first focus your eyes on the dog's harness.

Then you will see that the dog just had its back arched and its head turned to the side.

Because its face was turned away, many people thought one of the dog's eyes was in a different location, but it was only part of its mouth.

The dog's strange position is what surprised so many people, all of whom flooded the comments section to express their confusion

The dog's strange position is what surprised so many people, all of whom flooded the comments section to express their confusion.

One person said: 'I still haven't figured it out.'

Someone else added: 'I'm not sure how long I have to watch before I realize it. But it hasn't happened yet.'

“Turn your phone upside down,” someone else commented.

“That took forever,” someone else said.

Another user said: 'My brain hurts.'

One user wrote: 'Wow, it took me way too long to find out.'

“I hate this,” another person added.

“Omg this drove me crazy,” one person said.

“Looks like a scary dog ​​to me,” another user added.

One user commented: 'What a crazy optical illusion!'

“Wow, that was so confusing,” someone else said.